In case of single config, w_param_text is NULL. In snd_soc_dapm_new_control_unlocked() call failure case, it will end up calling snd_soc_dapm_free_kcontrol() unconditionally and result in NULL pointer dereference.
Signed-off-by: Pankaj Bharadiya <[email protected]> --- sound/soc/soc-dapm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 1ec06ef..ba6cb37 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -4094,8 +4094,9 @@ snd_soc_dapm_new_dai(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, outfree_kcontrol_news: devm_kfree(card->dev, (void *)template.kcontrol_news); - snd_soc_dapm_free_kcontrol(card, &private_value, - rtd->dai_link->num_params, w_param_text); + if (w_param_text) + snd_soc_dapm_free_kcontrol(card, &private_value, + rtd->dai_link->num_params, w_param_text); param_fail: devm_kfree(card->dev, link_name); return ERR_PTR(ret); -- 2.7.4
